:root{font-family:Arial,Helvetica,sans-serif;color:#183249;background:#f3f8fc;font-size:17px;line-height:1.65}*{box-sizing:border-box}body{margin:0}a{color:#075caa}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #e38a13;outline-offset:3px}.site-header{height:176px;background:#fff url('assets/header.webp') center/cover no-repeat;border-bottom:4px solid #1383bc;display:flex;align-items:center;justify-content:center;text-align:center;padding:14px 22%;}.site-title{display:block;color:#17374c;text-decoration:none;font-size:clamp(1.4rem,3vw,2.3rem);font-weight:800;line-height:1.14;text-shadow:0 1px white}.site-title small{display:block;font-size:.58em;font-weight:400;letter-spacing:.015em}.site-title span{font-weight:400;font-size:.65em}.shell{display:grid;grid-template-columns:186px minmax(0,1fr);min-height:calc(100vh - 176px);max-width:1500px;margin:auto;background:white;box-shadow:0 8px 34px #18324914}.sidebar{border-right:1px solid #c9dbe7;background:#edf6fb;padding:18px 10px}.sidebar nav{display:grid;gap:4px}.sidebar a{display:block;padding:8px 12px;border-radius:7px;text-decoration:none;font-weight:700;color:#23445b}.sidebar a:hover{background:#dceef8}.sidebar a[aria-current=page]{background:#0b679d;color:white}.menu-toggle{border:1px solid #9bbcd0;background:#fff;color:#164460;border-radius:7px;font:inherit;font-weight:700;padding:5px 11px;cursor:pointer;display:flex;align-items:center;gap:8px;margin-bottom:14px}.menu-toggle span{font-size:1.15em}.site-main{min-width:0;padding:clamp(24px,4vw,60px) clamp(22px,5vw,80px) 80px}.content{max-width:860px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:.78rem;font-weight:800;color:#287797;margin:0 0 8px}h1,h2,h3{line-height:1.22;color:#153e58}h1{font-size:clamp(1.75rem,3vw,2.55rem);margin:0 0 16px}h2{font-size:1.45rem;margin:38px 0 10px}h3{font-size:1.1rem;margin:20px 0 6px}p{margin:0 0 18px}ul,ol{padding-left:1.4em;margin:0 0 20px}li{margin:7px 0}.lead{font-size:1.14rem;line-height:1.6;color:#365468;margin-bottom:28px}.callout{padding:18px 20px;background:#eaf6fa;border-left:4px solid #1a8fb3;border-radius:0 8px 8px 0;margin:24px 0}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:15px;margin:26px 0}.card{border:1px solid #cfdee8;border-radius:10px;padding:19px;background:#fff;color:#183249;text-decoration:none;box-shadow:0 3px 10px #1b5b800b}.card:hover{border-color:#2588bc;background:#f6fbff}.card strong{display:block;color:#075c90;font-size:1.05rem;margin-bottom:5px}.card span{display:block;line-height:1.45}.step{padding:15px 0;border-top:1px solid #d7e5ee}.step h2{margin:0 0 8px}.example{background:#f6f9fc;border:1px solid #d8e6ed;border-radius:8px;padding:17px 20px;margin:18px 0}.example p:last-child,.callout p:last-child{margin-bottom:0}.topic-list{border-top:1px solid #d2e0e9;margin:25px 0}.topic{border-bottom:1px solid #d2e0e9;scroll-margin-top:18px}.topic-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;gap:15px;text-align:left;background:white;color:#075c9a;border:0;padding:16px 5px;font:inherit;font-size:1.04rem;font-weight:700;cursor:pointer}.topic-toggle:hover{background:#f3f9fd}.topic-toggle .mark{font-size:1.5rem;line-height:1;color:#287797}.topic-panel{padding:4px 15px 24px 6px;max-width:780px}.topic-panel[hidden]{display:none}.topic-panel h2{margin:16px 0 10px}.topic-panel h3{margin-top:23px}.topic-link{display:inline-block;margin-top:5px;font-size:.92rem}.glossary dt{font-weight:700;color:#164b6a;margin-top:21px}.glossary dd{margin:3px 0 0;padding-bottom:15px;border-bottom:1px solid #e0e9ef}.footer{font-size:.84rem;color:#527086;border-top:1px solid #d5e4ee;margin-top:55px;padding-top:18px}.collapsed .shell{grid-template-columns:76px minmax(0,1fr)}.collapsed .sidebar nav{display:none}.collapsed .menu-toggle{width:54px;overflow:hidden;white-space:nowrap}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:700px){.site-header{height:135px;padding:12px 18%;background-position:center;background-size:auto 135px}.site-title{font-size:1.4rem;background:#fffffff0;border-radius:8px;padding:4px 7px}.shell,.collapsed .shell{display:block}.sidebar{padding:9px 16px;border-right:0;border-bottom:1px solid #c9dbe7}.menu-toggle,.collapsed .menu-toggle{width:auto;margin:0}.sidebar nav{padding-top:10px;grid-template-columns:repeat(2,minmax(0,1fr))}.collapsed .sidebar nav{display:none}.site-main{padding:28px 20px 55px}.lead{font-size:1.06rem}}@media(prefers-reduced-motion:no-preference){.card,.sidebar a{transition:background .15s,border-color .15s}}